J- shelobick



'No. 620,37I. Patented Feb.- 28, I899. D. J. SHELDRICK.

00 N V E Y E R (Applicatioxi filed Doc. 3, 1897.)

2 Sheets8heat I.

(No Model.)

Patented Feb. 28, I899.

2 Sheets-Sheet 2 j a? a #0 D. J. SHELDRICK.

BONVEYER.

(Application filed Dec. 3, 1897.)

No. 620,37I.

(No Model.)

UNITED r STATES 4 PhTENT ()FFICE.

JEFFREY, F SAME PLACE.

CONVEYER.

SPECIFICATION forming part of Letters Patent No. 620,371, dated February28, 1899.

Application filed December 3, 1897. Serial No. 660,703. (No model.)

' act description of the invention, such as will enable others skilledin the art to which it appertaius to make and use the same, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon', which form apart of this specification.

Figure 1 is a side view of a section of chain: and showing the body partof one of my im-] proved attachments. Fig. 2 is a top plan Fig. 3 is across-section,=

view of the same. and Fig. 4 shows the interior of one of the parts ofthe attachment detached. Fig. 5 shows a section of a conveyer having aflight secured to the chain by the attachment when use is made of oneform of intervening part. Fig. 6 is a plan view; Fig. 7, a section of aconveyer having a flight secured by the attachment, with a modified formof intervening part. Fig. 8 is a conventional illustration in plan of aconveyer embodying my improvements.

Heretofore numerous Ways have been followed or proposed in the fasteningof flights, scrapers, buckets, &c., to conveyer-chains'of the classknown as cable-chains or coilchainsthat is to say, chains made up ofsimilar links, each formed of a round rod with ends welded together; butI have found serious disadvantages to be incident to each of these thatare known to me.

A indicates the chain as a whole in the accompanying drawings, it beingmade up of the links a and a, formed and joined in the way described,those at a being at right angles to those at a. Y

B indicates the body part of the attachment. It is made up of twocounterparts b 1). These are approximately as long as the open spacewithin the vertical links a. They are formed with grooves or sockets 5*,extending from end to end, there being an edge flange at b b and a coreor central flange at 12 When the two parts b b are brought together,they can inclose the two bars of one of the The inner half b of theattachment is cast,

with an inwardly-projectingplate D,as shown in Figs. 2, 3, 5, and '6. Ina two-chain conveyer the attachments are arranged in pairs,

those of each pair opposite to each other and withthe plates Dprojecting inward or toward each-other. Each plate is provided with anaperture for a pivot or a hinge.

E'indicates the scraper or flight. As shown "atFigsio and 6, it isrectangular in form and at eachfendis provided with a bracket-pieceriveted thereto and carrying a hinge-plate G. Hinge pintles or pivots atg are passed through the plates G and D.

In Fig. 7 a modified mechanism is shown. In this case each of the innerparts b of the attachment is formed with two inwardly-extendinghinge-plates D D, and those upon one side are connected to those uponthe other by a cross-bar H,.to which is secured the flight or scraper H.With a construction of this sort there is a firm support insured for theflight or scraper and also a secure fastening of the attachment to thechain-link. The link is surrounded by the gripping metal, and the boltsare passed between the side bars and are in such position as to obviatethe expanding of the chain laterally or providing obstructions in thepassage around the wheels; but it will be seen that as the flights arepivot'ally connected with eachof the supporting and propelling-chainseach can move relatively to said chain about its pivot to accommodateitself to any slight variation in the speedof the chains, &c. It willalso be seen by reference to the drawings that the flights are supportedbetween the chains and that the attachments by which the flights areconnected do not extend beyond the outer lines of the links athat is,the attachment lies between the outer side lines of the chain and doesnot increase the width thereof at any point.

I am aware that flights or cross-bars have been connected to twoparallel chains by having the end part of each flight or bar extendentirely across the longitudinal links of each chain, as illustrated,for instance, in Patent No. 231,793, to S. W. Greenleaf; in Patent No.5,145, to Cowling, and No. 285,664, to F. Pearce. I do not claim suchdevices as of my invention.

I am also aware that it has been heretofore proposed to constructspecial links for the chains, each link to be relatively longer than themajority of the links in the chain and each to have its sidelongitudinal bars flattened and perforated, so as to receive a hingepinfor the flight, and combine with said links a flight withrelatively-elongated ends adapted to receive the aforesaid pins in slotsin the ends of the flight. These are types of the'devices above referredto as heretofore used or proposed and upon which the presentconstruction is an improvement. In the present case the devices areadapted to be applied to any one of the links in an ordinary cablechain,and the axes of the flights are on vertical lines inside of the chains.The attachments require no special construction of link at any point.The chain can be made up and kept in stock in sections of considerablelength, and when varying orders are received, some for conveyors withthe flights at one distance apart and others for conveyors with flightsat other distances, said orders can be rapidly filled without waiting tomake up special lengths of chain sections with specially-constructedlinks to receive the attachments. The pivot-pins are situated inside ofthe chainl-links and do not require perforating or ot erwise weakeningor altering any of the link It frequently happens with heavy scraperconveyers that for either of several reasons, such as the unequalloading of the flights or thejerkiug action upon one chain, the links onone chain or the other fail to track properly on the wheel and take thesprocket-teeth unevenly. At such instants if either chain is aifected bythe leverage of the flight the distorting or twisting action upon thelinks just commencing to engage with the sprocketwheels is increased andthe whole conveyeris often thrown from the wheels. By having the axes ofpivotal attachment of the flights at lines inside of the chains thisdistorting or twisting action is avoided, and even though one of theflights should be slightly in advance of the other the attachment-linksat each side are largely relieved of the strain of leverage and thechains engage with and remain upon the wheel.

What I claim is-- 1. A conveyor having in combination the two chains,each made of the links a and a to an opposite similar link on the otherchain,

each attachment being formed of two parts, one part of each attachmenthaving an inward-projecting hinge-plate, the bolts passing through thelink a and binding together the parts of each attachment and the flighthaving a hinge connection with each of the hinged plates on oppositeattachments, substantially as set forth.

2. In a conveyer, the combination of two parallel cable-chains, a flightor scraper adapted to extend transversely between said chains, and twoattachments detachably connected to the ends of the flight by verticalpivots inside of the chain-links and each adapted to engage with a linkin the adjacent chain, substantially as set forth.

3. In a conveyer, the combination of two parallel cable-chains, havingadjacent links arranged at right angles to each other, an attachmentdetachably engaging a link in one of said chains a correspondingattachment on' the other chain, each of said attachments lying withinthe outer side lines of the chain to which it is attached, and a flightconnected to said attachments by vertical pivots inside the chain-links,substantially as set forth.

4. In a conveyer, the combination of two parallel cable-chains, anattachment detach.- ably connected to a link in one of said chains, andhaving an inwardly-projecting flange or hinge-plate, a similarattachment detachably connected to a link in the opposite chain, ascraper-flight provided at its ends with laterallyprojecting ears orlugs, and pins pivotally connecting said ears or lugs on the flight withthe inwardly-extending flanges on thechain attachment on lines insidethe chains, substantially as set forth.

5. In a conveyer, the combination of two parallel cable-chains, anattachment encircling and secured to one link of one of said chains andhaving an inwardly-extending flange or lug and a similar attachmentconnected to a link in the other chain, a flight arranged between thechains, and provided at each end with a pair of laterally-projectinglugs or cars, the flanges or lugs on the chain attachments being adaptedto lie be-v tween the lugs on the adjacent end of the on the flight withthe flanges on the attachments, substantially as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

DAVID J. SHELDRIOK.

Witnesses:

F. E. COLTON, A. I). SHAW.

flight, and pins pivotally connecting said lugs

